Image Formation by Spherical Lenses
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Choose the correct ray diagram?

- The image formed will be diminished.
The intensity of the image formed will decrease.
- Image will not be formed.
The intensity of the image formed will increase.
If AB is an object and A'B' is an image formed, then match the following.
1 - A, 2 - C, 3 - A, 4 - B
1 - D, 2 - C, 3 - A, 4 - B
1 - A, 2 - C, 3 - B, 4 - D
1 - C, 2 - A, 3 - A, 4 - B
Real, inverted and enlarged image will be formed in case of:
Concave lens, object placed between focus F & optical centre O.
Convex lens, object placed between F1 and 2F1.
Concave mirror, object placed between pole & focus.
Convex lens, object placed beyond 2F1.
Identify the condition, which will form enlarged, virtual and erect image?
Convex lens, object placed between F1 and 2F1.
Convex lens, object placed beyond 2F1.
Convex lens, object placed between F1 and optical centre O.
Concave lens, object placed beyond centre of curvature.
An object is placed infront of a lens. If we cover the middle part of the lens, the intensity of the image formed will decrease.
False
True
Identify the condition in which image formed is real, inverted and diminished from the following.
Concave lens, object placed between focus and optical centre
Convex lens, object placed between F1 and 2F1
Concave mirror, object placed between centre of curvature and focus
Convex lens, object placed beyond 2F1
Which mirror or lens can form a virtual, erect and highly diminished image of object?
convex mirror and convex lens
convex mirror and concave lens
concave mirror and concave lens
concave mirror and convex lens
- At F
- Between C and F
- Between F and O
- At O
A point on a thin lens, through which light ray passes without any deviation is called ______________.
centre of curvature
optical centre
- second focus
focus